Internal-combustion engine



March 19, 1929. c, FLAKER 1,705,754

INTERNAL COMBUSTION ENGINE Filed March 31, 1927 I 20 7 y W 9 2/ l4 Isa/3b ,T

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Patented Mar. 19, 19259.: H p

UNITED STATES PATENT OFFICE.

CARL FLAKER, F FLORISSAR'T MISSOURI.

INTERNAL-COMBUSTION -ENGINE.

Application filed March 31;

This invention relates to'internal combustion engines and has forits principal object to provide a simple and efficient slide valve for controlling both the supply of combustible mixture to the working cylinder of the engine and the exhaustofburned gases therefrom. Other objects are to produce a valve that is simple, compact and easily operated and is not likely'to get out of repair and to effect compensation for the wear of the cooperating parts and the expansion and contraction thereof due to temperature changes. 7

The invention consists in the valve mechanism and in the parts and combinations and arrangements of parts hereinafter described and claimed. 1 In the accompanying. drawing which forms part of this specification and wherein like symbols refer to like parts wherever they occur, 4 Fig. 1 is a vertical longitudinalsection through the cylinder of an internal combuss tion engine provided with a valve mechanism embodying my invention;

Fig. 2 is a vertical longitudinalsection taken at rightangles to the section shown in Fig. 1 along the line 2-2 therein; and

Fig. 3 is a plan view of the cylinder with the head removed.

Referring to the accompanying drawing, my invention is shown in connection with an internal combustion engine having a cylinder 4 and a Working piston 5 reciprocating therein, and inlet and exhaust ports 6 and 7 in its opposite sides, in communication with the clearance space or combustion chamber 8 located between the upper end of said piston and the head 9 of said cylinder. The piston 5 is connected to the crank shaft (not shown) of the engine by means of the usual piston rod 10; and the exhaust and inlet ports 6 and 7 of the cylinder 4 may be connected in any suitable manner with the exhaust and intake manifolds (not shown) of the engine. As shown in the drawing, the head 9 of the cylinder4 is provided with a threaded opening adapted to receive an igniting'device or spark plug 11.

The inlet and exhaust ports 6 and 7 are alternately opened and closed by means of valves 12 disposed within the cylinder and slidable longitudinally thereof in alternation across the inner ends of said intake and ex au p t t9 p n an l se the same,

ports 6 and 7 and have a radius of curvature corresponding to the radius of curvature of 1927. sci-mm; 179x89.

Said valvejpreferably comprises duplicate concavo-convex slide blocks or members Whose convex surfaces are. m contact with the bore of the cylinder adjacent to the said bore. The slide valves 12 are spaced apart and are held in contact with the opposite sides of the cylinder bore by means of oppositely disposed spacer or guide blocks 13 and 14 seated within longitudinal recesses provided 7 therefor in the cylinder spacer or guide block 14 is provided at its outer side with a cylindrical projection 14 which is press-fitted in a radial bore 16 pro vided'therefor in, the opposite side of the cylinder bore, the cylindrical recess or pocket 15 in one side of the cylinder bore .and the cylinder bore in the opposite side thereofv being preferably disposed in axial alinement.

The valves 12, 12 are slidlongitudinally of the cylinder in opposite directions to alternately cover and uncover the inlet and exhaust ports 6 and 7 by means of a rocker member 17, which is located in the combustion chamber between the opposing concave inner sides of said valves and is rotatably therefor in the opposing concave surfaces of the slide blocks 12. As shown in the drawing, the sen'ii-circular flanges 18 are substantially circular in cross-section to prevent binding thereof in the semicircular recesses 19 of the valve members 12.

' As shown in the drawing, one end of the rocker member 17 is rotatably supported in the radially slidable spacer block 13 by means of a trunnion 20 journaled in the spacer "block or pocket-bearing 13? in said block; and the other, end of said rocker member is rotatably supported in the fixed spacer block 14 by means of a rock shaft 21,

wh ch. is l ll naled 1 ,3 bee ing' r 91 said fixed block and is provided at its outer end with a rocker arm 22. The rocker arm 22 may be actuated in any desired manner (not shown), to operate the valve mechanism at proper intervals.

As shown in the drawing, the spacer block 14, which rotatably supports the rock shaft 21 of the rocker member 17, is press-fitted in the cylinder to prevent leakage; and the cylindrical member of the other spacer block 13 is slidably supported in said cylinder. The spacer block 13 is of wedge-shaped section, and the surfaces of the slide valves 12 in contact therewith are disposed at an angle corresponding to the angle of the sides of said flanges. Said spacer block is forced outwardly to spread apart the valves 12, and thus press the latter against the side walls of the cylinder, preferably by means of a coil spring 23 located in the bearin 13" of said spacer blo'ckbetw'een the inner end of said bearing and the outer end of the trunnion 20 journaled therein.

It is obvious from the foregoing description that my valve"mechanism is simple in construction and is easily operated; that it maintains a gastight joint between the valves and the cylinder regardless of wear or expansion or contraction of the parts due to temperature changes; and that it is of strong and durable construction and is notliable to get out of repair.

The invention is not restricted to the precise forms and arrangements shown in the drawing.

What I claim is:

1. An internal combustion engine comprising a cylinder having intake and exhaust ports in its opposite sides, valves arranged in. said cylinder for opening and closing said ports, and a member mounted in said cylinder between and in operative engagement with both of said valves for simultaneously actuating said valves to open and close said ports in proper timed relation.

2. An internal combustion engine comprising a cylinder having intake and erhaust ports in its opposite sides, valves arranged in. said cylinder for longitudinal sliding movement across said ports, and an oscillating member mounted in said cylinder in operative engagement with said valves for actuating the latter to open and close said ports in proper timed relation.

3. An internal combustion engine comprising a cylinder having intake and exhaust ports in its opposite sides, longitudinal slidable valves in said cylinder for opening and closing said ports, means in said cylinder for operating said valves to open and close said ports in proper timed relation, and spacer members in said cylinder between said valves, said valve operating means comprising a rocker member journaled in said spacer members and operatively engaging said valves to actuate the same. 7

4. An internal combustion engine comprising a cylinder having intake and exhaust ports in its opposite sides, valves in said cylinder and slidable longitudinally thereof to open and close said ports, and a rocker member journaled in said cylinder and operatively engaging said valves to cause the said valves to open one port and close the other when the said rocker member is oscillated. r

5. An internal combustion engine com prising a cylinder having intake and exhaust ports in its opposite sides, valves lo cated in said cylinder and movable longitudinally thereof across said ports to open and close the same, and a rocker member journaled in said cylinder and operatively engaging each of said valves to cause said valves to open one port and close the other when the rocker member is actuated.

6. An internal combustion engine comprising a cylinder having exhaust and intake ports in its opposite sides, valves in said cylinder and slidable longitudinally thereof to open and close said ports, spacer members on the opposite sides of said cylinders between the adjacent ends of said valves, a rocker member located in said cylinder between said valves and journaled in said spacer members, said rocker member being operatively connected with said valves to slide the same in opposite directions to open one port and close the other,

and means whereby one of said spacer memhers is adapted to serve as a wedge for pressing said valves into engagement with the cylinder.

7. An internal combustion engine comprising a cylinder having exhaust and intake ports in its opposite sides, valves in said cylinder and slidable longitudinally thereof to open and close said ports, spacer members on the opposite sides of said cylinders between the adjacent ends of said valves, a rocker member located in said cylinder between said valves and journaled in said spacer members, said rocker member being operatively connected with'said valves to slide the same in opposite directions to open one port and close the other, one of said blocks being slidable and shaped after the manner oi a wedge for spreading apart said valves, and a spring for maintaining said slidable block in engagement with said valves.

8. An internal combustion engine comprising a cylinder having exhaust and intakeports in its opposite sides, valves in said cylinder and slidable longitudinally thereof to open and close said ports, the ad jacent face of said valves being provided with recesses, spacer members on the opposite sides of said cylinders between the adjacent ends of said Valves, a rocker member located 1n said cyhnderbetween'said'valves and journaled in saidspacer members, said said rocker member is escillatedione of said spacermembers being slidable and shaped to serve asa Wedge for pressing said valves in- 10 v to engagement W1th the eyhnder.

Signed at St. Louis day of March, 1927.

, Missouri, this 26th CARL FLAKER. 

